Word of caution, these Emerald Cories are Brochis Splendens and can get much larger especially the females than a standard Cory.
AFTER the tank completes the cycle, you may consider a couple other Dwarf Cories, they do hang out together. But thinking out the fish combination you have/want will be important. They like very clean water.
I love my guys, but since they get big, I got him and his buddy smaller Cory friends and they hang out and pair off.
First you want to make sure you finish your cycle and keep your current fish healthy as possible.
How long has it been cycling?